Static Binary Output Module (Som); Introduction; Design - ABB Relion 670 Series Technical Reference Manual

Section 17
IED hardware
17.2.11
17.2.11.1
17.2.11.2
640
Function or quantity
Making capacity at inductive load with L/R>10 ms
0.2 s
1.0 s
Breaking capacity for AC, cos j>0.4
Breaking capacity for DC with L/R < 40 ms

Static binary output module (SOM)

Introduction

The static binary output module has six fast static outputs and six change over
output relays for use in applications with high speed requirements.

Design

The Static output module (SOM) have 6 normally open (NO) static outputs and 6
electromechanical relay outputs with change over contacts.
The SOM consists mainly of:
• An MCU
• A CAN-driver
• 6 static relays outputs
• 6 electromechanical relay outputs
• A DC/DC converter
• Connectors interfacing
• CAN-bus to backplane CBM
• IO-connectors to binary outputs (2 pcs.)
The following parts are supervised:
• Interruption in relay coil
• Short circuit of relay coil
• Driver failure
1MRK 505 208-UEN B
Trip and Signal relays
30 A
10 A
250 V/8.0 A
48 V/1 A
110 V/0.4 A
125 V/0.35 A
220 V/0.2 A
250 V/0.15 A
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